Direct Commission and FED REC Board Questions

I have recently been approved by the State and NGB to Direct Commission as an Infantry Officer.

I have been given a Fed Rec Board Date for this month.

My questions are:

1) How should I prepare for this board? What type of questions should I expect as an E6 going to a Fed Rec Board?

2) I have been told to be prepared to swear in after the board, but have been given no further information no matter how much I pry. I have heard that there is a Direct Commission OCS program that I would need to attend, is this true?